从基于计算机领域信息系统评价的数字图书馆项目评价、基于数字资源与服务使用计量的数字图书馆评价、基于服务评价的数字图书馆评价三方面梳理和总结国外已有的数字图书馆评价实践,并从指标特征、指标内容、评价方法等方面分别对上述实践的特点做简要分析,以期对我国数字图书馆评价的实践与理论研究提供借鉴。 From the evaluation of digital library project based on computer domain information system evaluation, digital library evaluation based on digital resource and service usage measurement, evaluation of digital library based on service evaluation, we review and summarize the evaluation practice of digital library abroad, And from the characteristics of the index, the content of the index, evaluation methods and other aspects of the characteristics of the practice to do a brief analysis, with a view to our digital library evaluation practice and theoretical research to provide reference.